bash-busybox, 36 bytes

Result

AC

Duration

765ms

Code [DL]

sed 's/.* \(.\)\1.\|..\(.\).*/\1\2/'

stdin

288 379
343 942
471 175
362 214
822 778
656 552
767 765
552 294
626 221
793 936
139 998
969 496
783 733
368 336
743 664
477 357
355 582
544 813
163 633
277 997
882 745
629 214
366 664
363 848
833 334
861 766
422 626
622 524
647 286
395 916
599 956
646 667

stdout

8
3
1
2
7
5
7
2
2
3
9
9
3
3
6
7
5
4
3
9
2
9
6
3
3
1
2
2
7
5
9
6

stderr

strace

10    execve("/bin/sh", ["/bin/sh", "/root/script", "/volume/CODE"], 0x7ffdf4f1e250 /* 9 vars */) = 0
11    execve("/usr/bin/realpath", ["realpath", "/volume/CODE"], 0x55682fed1d18 /* 9 vars */) = 0
11    +++ exited with 0 +++
10    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
12    execve("/bin/cp", ["cp", "-f", "/volume/CODE", "/opt/jails/bash-busybox/code.bas"...], 0x55682fed1d68 /* 9 vars */) = 0
12    +++ exited with 0 +++
10    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
13    execve("/bin/cat", ["cat", "-"], 0x556830e800d8 /* 9 vars */) = 0
14    execve("/usr/sbin/jk_chrootlaunch", ["jk_chrootlaunch", "-j", "/opt/jails/bash-busybox", "-x", "/bin/bash", "/code.bash"], 0x556830e801c0 /* 9 vars */) = 0
13    +++ exited with 0 +++
10    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=13, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
14    execve("/bin/bash", ["/bin/bash", "/code.bash"], 0x7fffb094c390 /* 9 vars */) = 0
15    execve("/bin/sed", ["sed", "s/.* \\(.\\)\\1.\\|..\\(.\\).*/\\1\\2/"], 0x55b66d166880 /* 10 vars */) = 0
15    +++ exited with 0 +++
14    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
14    +++ exited with 0 +++
10    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
16    execve("/bin/rm", ["rm", "/opt/jails/bash-busybox/code.bas"...], 0x55682fed1cc8 /* 9 vars */) = 0
16    +++ exited with 0 +++
10    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
10    +++ exited with 0 +++